diff --git a/docs/sources/examples/running_redis_service.rst b/docs/sources/examples/running_redis_service.rst
index edcf73e657..744eca7ca5 100644
--- a/docs/sources/examples/running_redis_service.rst
+++ b/docs/sources/examples/running_redis_service.rst
@@ -29,7 +29,7 @@ with your own user name.
 
 .. code-block:: bash
 
-    sudo docker build -t <your username>/redis
+    sudo docker build -t <your username>/redis .
 
 Run the service
 ---------------